Preheat oven to 400°F. Line a baking sheet with tin foil (makes for easy clean up).
Place the French bread halves on the prepared baking sheet.
In a small bowl combine the melted butter and garlic powder. Brush the melted butter mixture over the tops of the loaves.
Place the loaves in the oven for 8-10 minutes or until the loaves have crisped up.
Add about 3/4 of the pepperonis to the tops of the loaves (prevents the bread from getting soggy). Spread the pizza sauce overtop of the pepperonis. Sprinkle the shredded mozzarella over the pizza sauce and finally top with the remaining pepperonis. Feel free to add any additional toppings!
Bake for 8-10 minutes or until the cheese is melty.
Remove from the oven, garnish with chopped basil if desired. Cut and serve immediately.